/*
 * Copyright 2022-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.instancio.internal.util;

import java.util.ArrayList;
import java.util.List;

public final class SealedClassUtils {

    public static List<Class<?>> getSealedClassImplementations(final Class<?> sealedClass) {
        final List<Class<?>> results = new ArrayList<>();

        for (Class<?> subclass : sealedClass.getPermittedSubclasses()) {
            if (subclass.isSealed()) {
                results.addAll(getSealedClassImplementations(subclass));
            } else {
                results.add(subclass);
            }
        }
        return results;
    }

    public static boolean isSealedAbstractType(final Class<?> klass) {
        return klass.isSealed() && ReflectionUtils.isInterfaceOrAbstract(klass);
    }

    private SealedClassUtils() {
        // non-instantiable
    }
}
